CLEANSTART-2026-UH39784

CLEANSTART-2026-UH39784 PUBLISHED CVSS 9.800000190734863 CRITICAL

Record from OSV · Published February 17, 2026

SSH clients receiving SSH_AGENT_SUCCESS when expecting a typed response will panic and cause early termination of the client process

Fixed versions

Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.

Package	Ecosystem	Fixed in
istio-fips	CleanStart	1.27.4-r1

Risk scores

CVSS 3.1

9.800000190734863

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Vendor	Product	Versions
CleanStart	istio-fips	0

Timeline

Feb 16, 2026 CVE Updated
Feb 17, 2026 CVE Published

Query this with the API

The same record, from the CLI:

vulnetix vdb vuln CLEANSTART-2026-UH39784
vulnetix vdb fixes CLEANSTART-2026-UH39784

Or with curl, using the org id and key from your account page:

curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
  "https://api.vdb.vulnetix.com/v2/vuln/CLEANSTART-2026-UH39784/fixes/registry"

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References

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